20512290

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{43}}^1\times {\mathrm{15901}}^1$

素因数の和:15954

約数の個数: 32

約数和(自身を含む): 50377536

約数和(自身を除く): 29865246

約数列:

[1, 2, 3, 5, 6, 10, 15, 30, 43, 86, 129, 215, 258, 430, 645, 1290, 15901, 31802, 47703, 79505, 95406, 159010, 238515, 477030, 683743, 1367486, 2051229, 3418715, 4102458, 6837430, 10256145, 20512290]

約数ペア:

[(1, 20512290), (2, 10256145), (3, 6837430), (5, 4102458), (6, 3418715), (10, 2051229), (15, 1367486), (30, 683743), (43, 477030), (86, 238515), (129, 159010), (215, 95406), (258, 79505), (430, 47703), (645, 31802), (1290, 15901)]